Improvement in injectors



A. F'RIEDMANN. I Injector.

No. 213,648. Patented Mar. 25,1879.

y/ -v/-l/ mmf/f I MFETERs. PHOTG-LITHQGRAPMER. WASHINGTON, n c.

UNITED STATES PATENT OEErcE.

ALEXANDER FRIEDMANN, OF VIENNA, AUSTRIA.

IM PROVEM ENT IN INJ ECTORS.

Spccilication forming part of Letters Patent No. 213,648, dated March25, 1879 application filed February 5, 1879; patented in England,December 24, 1877.

To all 'whom 'it may concern:

Be it known that l, ALEXANDER FRIED- MANN, of Vienna, Austria, haveinvented a certain new and useful Improvement in Injectors, whichimprovement is fully set forth 1n the following description.

This invention relates to injectors which serve to supply boilers withwater by the direct action of steam under pressure; and it consists incertain improvements on my own well-known form of injector, the sameinvolving new constructions, combinations, and arrangements of parts, ashereinafter more fully set forth.

What these my said improvements are, and the manner in which the sameare or may be carried into effect, will be readily understood from thefollowing description and the accompanying drawings, which form a partthereof, in Which, for the purpose of comparison and more readycomprehension of the invention, the old form of the injector, as well asthe improved, is set forth.

Figures 1, 2, 3, and 4 of the drawings represent longitudinal centralsections of injectors made in accordance with this invention, Fig. 1b, across-section on lilies w x, Figs. 1, 2, and 3 5 Fig. 5, a longitudinalsection of my old form of injector.

Between the nozzle for the entering steam, a., and thecondensation-chamber c, is an intermediate tube, z, which latter had theeffect in my old injector (sce Fig. 5) of dividing the water whichenters the injector by the portW into two parts, so that one portionpassed through the opening m between the steamnozzle and intermediatetubes, and the other through the opening abetween the intermediate tubeand the walls of the condensationchamber.

In injectors constructed according to one part of my present improvementthe intermediate tube z is otherwise constructed and arranged. It nolonger divides the inilowing water; but on the contrary all the waterpasses through the opening between the steam-nozzle a and intermediatetube z. This result is obtained by making a tight joint between theinlet end of said tube and the envelope or surrounding portionx of thebody of the injector, as in Figs. 1, 2, and 4, or, which is preferred,

by forming it, by casting or otherwise, in one piece with the body ofthe injector 7c, as shown in Fig. 3. In either construction there is achamber, 1', surrounding it, which is closed on the side on which thewater enters, but communicates with the condensation-chamber c throughthe opening between the walls of the latter and the intermediate tube.At about midway of the condensation-chamber is a hole, o, through whichcommunication is established with the space t' on the side of the pipeof the overflow-valve c, as shown in Figs. l, 2, and 3, or directly withthe said pipe, as in Fig. 4.-. This space t' is formed, as plainly shownin Fig. lb, by the outside ofthe condensation-chamber, the inner surfaceof the body of the injector k, the strengthening-ribs r of thecondensationchamber, and the diaphragm d.

The diaphragm d, Figs. 1, 2, and 3, separates the space u from the spacei, so that the former does not form a continuation of the latter, and itis so placed with reference to the overflow-pipe o that the water maypass thereinto as well from the space u as the space i.

The operation of the injector will be readily understood from theforegoing description.

By closing the space surrounding the intermediate tube z on the side ofthe inilowing water, by making the hole o in the wall of thecondensation-chainber, and by the formation of the space t' by means ofthe diaphragm d, the injectors are made to feed warmer water than can bedone by injectors heretofore known.

The space t', formed by means of the diaphragm d, although verydesirable. for the best operation of the injector, is not absolutelyessential; and, particularly if it is desired merely to alter my oldinjectors, a great improvement in operation is effected by theconstruction represented in Fig. 4, to wit by mak ing the hole odirectly from the condensationchamber into the overflow-pipe o, thespace i" being closed on the side of the inflowing water, as beforeexplained.

In the injectors represented in Figs. 2 and 3, the space T and the spacesurrounding the condensation-chamber communicate with each other, sothat there is less danger of bursting when exposed to severe cold. n

In Fig. 3 there is a disadvantage from the contraction of the space r;but the construed tion is simpler, the intermediate tube being cast inone piece with the body of the injector. It is very evident, however,that the body of the injector and the intermediate tube may be cast inone piece, while the large size of the space r is maintained, and thisconstruction of those parts is therefore preferred.

The diaphragm d is shown in the Figs. 1,2, and 3 as made in one piece ofcasting with the condensation-chamber, which is the best constructionbutit may be otherwise attached to the condensation-chamber, or cast inone piece with or otherwise attached to the body of the injector; kor itmay be independently secured between the walls of thecondensation-chamber and the body of the injector.

I do not therefore wish to limit myself to the details of constructionbut,

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s-

1. In an injector, the condensation-chamber having at a suitabledistance from the outlet a hole in its walls and communicatingtherethrough with the overow-pipe, substantially as described.

2. In an injector, the condensation-chamber with a hole in the walls ata suitable distance from the exit, in combination with the diaphragmformed in one piece therewith, or Otherwise interposed between it andthe body of the injector, and an overliow-pipe, snbstantially asdescribed.

3. The combination, in an injector, with the steam-nozzle, anintermediate tube between said nozzle and thecondensationchamber, thesame being fitted tightly within or made in one piece with thesurrounding portions of the body of the injector, and thecondcnsationchamber communicating throughahole at some distance from theoutlet with an overflow-pipe, substantially as described.

4. An injector having a steam-nozzle, an intermediate tube tted tightlywithin or made in one piece with the surrounding portions of the body ofthe injector, a condensationchamber having a hole in its walls at somedistance from the outlet, a diaphragm surrounding the end of saidcondensation-cham ber, between it and the body of the injector, and anoverflow-pipe, substantially as described.

5. An injector havin g a steam-nozzle, an intermediate tube between saidnozzle and the condensation-chamber, the said tube being tted closelywithin or made in one piece with the surrounding body of the injector, acon densation-chamber with a hole in its wa-lls at some distance fromits outlet, a diaphragm surrounding said condensation-chamber, betweenit and the bodyot the injector, the space or spaces formed by saiddiaphragm, the condensation-chamber, and body of the injector being incommunication with the space surrounding aforesaid intermediate tube,and an overllow-pipe in communication with the spaces on both sides ofsaid diaphragm, into one of which spaces the hole inthe walls ofcondensation-chamber opens, substantially as described.

In testimony whereof I have signed my name to this specification beforetwo subscribing witnesses.

A. FRI-EDMANN.

Witnesses:

RoBT. M. HooPER, J. ARMENGAUD, Jeune.

